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Computer-Controlled Sound System for Multi-Purpose Event Space
A computer-controlled sound system for multipurpose event spaces, such as theaters and large arenas, is described. The authors have installed many professional sound systems for multipurpose event spaces and, using their experience, have developed a DSP-based digital multiprocessor (WZ-DM30) which provides compression, equalization, delay, and crossover. Sound localization systems cannot be designed without these signal-processor functions in order to control both signal delay and sound-level attenuation. Also described is a digital sound-field controller (WZ-DF28A) to reinforce the architectural sound field, comprising 20-bit floating-type A/D conversion, multistage noise-shaping-type D/A conversion, and FIR filters. The network system, which can link multiples of the above components, is also described.
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